It takes approximately an hour to donate blood, although the donation of a pint of blood takes only around eight to 10 minutes. A person spends the additional time registering, providing health history information, undergoing a brief physical examination and recovering.
Registering for blood donation involves providing personal information and photo identification. A confidential interview about the donor's health and travel history follows, and a nurse checks the person's blood pressure, pulse, hemoglobin levels and temperature to ensure that she is healthy and able to make a donation. After donating blood, donors enjoy refreshments and spend 10 to 15 minutes resting to allow their bodies to become accustomed to the decrease in fluid volume.